I always think it’s a shame to have Pressure Points without a Brains, given it’s such a small module, and this combo could be really useful for some interactive sequencing of the Morphagene.
To make room, I guess you could just go with Stages and forego Maths, though I’m too much of a Maths fancier to make that call myself, so I’d probably sacrifice the extra ‘channels’ and take out the Stages.
If you end up with spare room after a rethink, and you’re not focused heavily on simplicity, I’d also consider a Disting - in a small setup like this it can bring so many functions to the table, and even if you end up using it as a set-and-forget on your favourite program, it’s small and powerful. But bear in mind it also has some interesting sample modes, as well as stereo effects that can complement the Morphagene’s stereo outputs nicely.
The other low-hp addition I’d look into is a Mutable Ears, another great buddy for the Morphagene, and a solid choice if your focus is on sampling a variety of external sources.
So I think my move here would be to take out Stages and add Brains, Disting 4, and Ears, which I think would leave room for another 2HP module (maybe the Turing machine).